Hi... I will be on the HAL cruise in January. I am going to get my shots next week. I will let you know what the doctor advises me. I am going to a travel clinic at UCONN medical center in Farington, CT. I do believe that the advise given you by gann is correct. I read a letter recently to a travel columist complaining that the travelers had gotten a yellow fever shot to see the falls on the Brazil side and then found out that it was not necessary, See you in January... Kathleen.